This is my DD15, as well. She loves tap/jazz/hip hop. She takes ballet because it makes her a better dancer, but she doesn't love it. The best thing we ever did was move her to a tap/jazz-centered studio. Her old studio was ballet/lyric-centered. Despite being one of the best at her level, DD never fit "the mold" for what those dancers should look like. she is just 5' tall, is very slim, but curvy and just doesn't have the feet for ballet. It was starting to take a toll on her, emotionally. We moved her to a new studio this year and the change has been amazing. She has rediscovered her passion for dance and no longer feels like she's not good enough.
So, my advice for any parent who's child takes dance seriously is to get them into a studio that fits the type of dancer they are. It's always good to have a well-rounded program (DD takes ballet, jazz, modern, tap, hip hop, technique and theater classes), but they need to be in an environment that supports who they are and what they can do.